Atomic Calculations

Front

What is a subatomic particle with a negative charge?

Back

Electron: A negatively charged particle found in the electron cloud surrounding the nucleus of an atom.

Front

Where is most of the mass in an atom located?

Back

In the nucleus: The nucleus contains protons and neutrons, which account for most of the atom's mass.

Front

How many electrons does Fe 2- have?

Back

28: Iron (Fe) has 26 protons, and with a 2- charge, it has 28 electrons.

Front

What is the center of an atom called?

Back

Nucleus: The nucleus is the central part of an atom, containing protons and neutrons.

Front

How many neutrons does Carbon-14 have?

Back

8: Carbon-14 has 6 protons and 8 neutrons (14 - 6 = 8).

Front

What is the charge of a proton?

Back

Positive: Protons carry a positive charge.

Front

What is the charge of a neutron?

Back

Neutral: Neutrons have no charge.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is an isotope?

Back

Atoms of the same element with the same number of protons but different numbers of neutrons.